Hulliug-lffiaghinb



D. KRAUSE.

HULLING MACHINE.

APPLiCATION met! our. 16, ma.

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HULLINCLMAGH INE.

APPLICATION FILED OCT. l6, IBIS.

1,395,231 1. Patented June a, 1919.-

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Patented J 11116 3, 1919.

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N T TA ES TEN OFFICE.

'DAVID xnapsn, or CLEVE AND, onic. 1

larly adapted [for rice or barley, and 'de-- signed. to rapidlyjand effectively remove, the hulls of suchgrain, the machine being Icapable of continuous operation, and the hi llingbeing effected by the action of=rotary disks or abradi-ng'wheels-which revolveat a highspeedin pne direction and which coop-- erate with alternating abrading ringsor an nuli-which evolver slowly in the opposite direction, the grain (flowing between thesuc:

cessive pairsor'sets ofabrading wheels,- 7 The machine is also provided with }improv d f eding d i es-and with improved Various other features and advantagesof the chine will. be apparent fromgthe fol:

means for intermittently discharging the lowing description and the accompanying drawlngs'. j

In the d aw ng Figure .lisa le d e vation ofjthe; machine' v 2- is a central vertical v s'ection'. Fig; 3 is a face view of a stop mechanism controlling the feeding and discharging actions, Fig. 4; is afsection V on the line 44 ofFig; 2.

Referring specifically to the'drawin'gs, 22 indicates a horizontal shaft mounted in suitable bearings'B'in a frame Qand this shaft is connected by stepped pulleys 12 and 13 and belt to a counter-shaft 27. The shaft 22 carries the disks to be described, and the shaft 27 drives the drum to be described, the present point being that by means of the step-pulleys 12 and 13 the relative speed of rotation of those parts may be varied, which is of some importance in obtaining the proper action, especially on different kinds of grain.

The disks are indicated at 19, and are mounted on a hub 21 which is keyed to the shaft 22, the disks being spaced apart by collars 28 on the hub. An end plate 23 bolted to the hub, clamps the disks in place.

8 indicates an outer drum the periphery of which consists in the main of screen or Wire fabric segments 24':- One end plate of the drum has a tubular or feeding neck 8 which turns in a ring bearing 8 on the frame.

HUnLIiIe-Mlicnfmn if V rlslieoificationiof 'l t' Patented J U116 3, 1919. iApplicationfiledbctober 16, 1918.

semi No. 258,453.

cooperate with those disks to hull the grain.

fiowingthroughrthe spaces between. The disks 1'9. and the segments 20 will preferably be made of suitable abrading material, and as heretofore indicated the disks 19 rotate athigh, speed in onedirection and the seg-' meiits; 20 will revolve at low speed in the opposite direction.

The wholelgrain-is fed into the neck of the drum through a chute 18 from a hopper 7. The inlet to, the hopper 7- from the spout 14 is controlled vby a-swinging valve 15, and the outlet from the hopper ,7 to the chute 18 is controlled by a swingingfvalve 17. These actuated by .thejstop motion shown in Fig.

'80 valves are operated by a cam mechanismf 3 particularly. This comprises a disk 10 r fastened to the end plateofthe drum 8 and having a pair of circular face grooves 29 which terminate adjacent to the tooth 30 adapted to engage the pins 28 of the disk 11, and the pins 28 enter and leave the grooves 29throughgates29v adjacent totoothv 30,

the whole forminga stop motion or escapement for giving intermittent rotary ;move- 7 ln eutito the disk ll. N This disk is mounted on a shaft 11 which is geared by pinions 6 to a cam gear 9 having a face cam groove from which motion is communicated through levers and links 16 and 17 to the valves 15 and 17 respectively, the action being to open and then close the valve 15, and then to open and close the valve 17 to feed the contents of the hopper 7 into the machine. The feed may be varied by changing the proportions of the pinions 6.

The periphery of the drum 8 is provided, between the ends of the segments 20, with gates 35 which may be opened intermittently to allow the escape of the material into the discharge casing D. These gates are mounted on rock shafts 34 which extend through the end plate of the drum 8 and each carries an arm 33 adapted to be tripped, against the tension of the spring 39, by a tripper 32 which slides in and out in guides 40 on the frame and is operated by a lever 31 connected at its lower end to the tripper and provided at its upper end with a roller 31 which runs in cam groove 9 on the inner Side of the cam wheel 9. The arm 33 when tripped is engaged by a pawl 36 and the door 35 is held open until the pawl is released, This release is effected by a cam 37 on the frame engaging a roller 38 on the pawl and throwing the pawl out to allow the spring 39 to return the gate to its closed position. These parts are so located that each gate re mains open about g of a revolution.

The drum is driven from the counter-shaft 27 by a pinion 26 engaging the ring gear on the end plate of the drum.

By proper adjustment of the gearing the speed of the machine and the feed and discharge may be regulated as desired. The use of hulling disks rotating in one direction alternating with hulling segments revolving therebetween in the opposite direction results in a very efiicient hulling action and the action of the machine may be continuous, since the machine is automatically and continuously fed and the material dis charged as the operation proceeds, and the machine does not have to be stopped to discharge it. I

The grain which is fed in through the hub of the drum finds its way in and out between the attrition members 19 and 20, by which itis hulled, and its flow is assisted or permitted by the spaces between the ends of the segments 20, which permit thegrain to cross or pass from one end of the drum to. the other, whereby all ofthe attrition members are active in the hulling process or op.' eration.

I claim: 7 V p 1 1. A rotary huller comprising a set of rotary attrition disks spaced apart, a rotary drum inclosing said disks, and a set of laterally-spaced attrition segments projecting inwardly from the periphery of the drum and between said disks, said segments being also spaced apart at their ends, and the drum having valved discharge outlets in the spaces between said ends.

2-. A rotary huller comprising a set of rotary attrition disks spaced apart, a rotary drum surrounding said disks and provided with a plurality of circumt'erentially spaced attrition members projecting between said disks and valve means to periodically discharge hulled material through the wall of the drum, from the spaces between said members.

3. The combination with a rotary huller having a drum and circumferentially spaced segments in the interior thereof, and located between the ends of said segments, discharge doors in the wall thereof, of means automatically actuated by the rotation of the drum to open and close said doors, said means including a stop motion to produce intermittent operation of the doorsl. The combination witha rotary huller having a drum and discharge'doors in the peripheral wall thereo flsai'd doors having crank arms connected thereto, of a tripper movable into'the path of the arms to strike the same and open the doors, means to auto matically operate the tripper, pawlsbngageable with said arms to hold the doors open durlng part of the rotation means to disengage the pawls and release the doors,

and springs to close the doors. I V

In testimony whereof, I, lo afiix my signature in presence of two witnesses.

' 7 DAVID KRAUSE.

lVitnessesz I JOHN A. BOMMHARD'IVI,

L. LoUIsMALM;

Copies of this patent may be obtained for five cents each, by addressing 'j the fcommissione r of Patents,

Washington, D. c. 

